==========================================================================
Ubuntu Security Notice USN-6029-1
April 19, 2023

linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15,
linux-dell300x, linux-gcp, linux-gcp-4.15, linux-hwe, linux-kvm,
linux-oracle, linux-raspi2 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS
- Ubuntu 16.04 ESM
- Ubuntu 14.04 ESM

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux: Linux kernel
- linux-aws: Linux kernel for Amazon Web Services (AWS) systems
- linux-azure-4.15: Linux kernel for Microsoft Azure Cloud systems
- linux-dell300x: Linux kernel for Dell 300x platforms
- linux-gcp-4.15: Linux kernel for Google Cloud Platform (GCP) systems
- linux-kvm: Linux kernel for cloud environments
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-raspi2: Linux kernel for Raspberry Pi systems
- linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems
- linux-azure: Linux kernel for Microsoft Azure Cloud systems
- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- linux-hwe: Linux hardware enablement (HWE) kernel

Details:

It was discovered that the Traffic-Control Index (TCINDEX) implementation
in the Linux kernel contained a use-after-free vulnerability. A local
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2023-1281)

It was discovered that the infrared transceiver USB driver did not properly
handle USB control messages. A local attacker with physical access could
plug in a specially crafted USB device to cause a denial of service (memory
exhaustion). (CVE-2022-3903)

It was discovered that the Human Interface Device (HID) support driver in
the Linux kernel contained a type confusion vulnerability in some
situations. A local attacker could use this to cause a denial of service
(system crash). (CVE-2023-1073)

It was discovered that a memory leak existed in the SCTP protocol
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service (memory exhaustion). (CVE-2023-1074)

Lianhui Tang discovered that the MPLS implementation in the Linux kernel
did not properly handle certain sysctl allocation failure conditions,
leading to a double-free vulnerability. An attacker could use this to cause
a denial of service or possibly execute arbitrary code. (CVE-2023-26545)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.04 LTS:
   linux-image-4.15.0-1063-dell300x  4.15.0-1063.68
   linux-image-4.15.0-1117-oracle  4.15.0-1117.128
   linux-image-4.15.0-1130-raspi2  4.15.0-1130.138
   linux-image-4.15.0-1138-kvm     4.15.0-1138.143
   linux-image-4.15.0-1148-gcp     4.15.0-1148.164
   linux-image-4.15.0-1154-aws     4.15.0-1154.167
   linux-image-4.15.0-1163-azure   4.15.0-1163.178
   linux-image-4.15.0-209-generic  4.15.0-209.220
   linux-image-4.15.0-209-generic-lpae  4.15.0-209.220
   linux-image-4.15.0-209-lowlatency  4.15.0-209.220
   linux-image-aws-lts-18.04       4.15.0.1154.152
   linux-image-azure-lts-18.04     4.15.0.1163.131
   linux-image-dell300x            4.15.0.1063.62
   linux-image-gcp-lts-18.04       4.15.0.1148.162
   linux-image-generic             4.15.0.209.192
   linux-image-generic-lpae        4.15.0.209.192
   linux-image-kvm                 4.15.0.1138.129
   linux-image-lowlatency          4.15.0.209.192
   linux-image-oracle-lts-18.04    4.15.0.1117.122
   linux-image-raspi2              4.15.0.1130.125
   linux-image-virtual             4.15.0.209.192

Ubuntu 16.04 ESM:
   linux-image-4.15.0-1117-oracle  4.15.0-1117.128~16.04.1
   linux-image-4.15.0-1148-gcp     4.15.0-1148.164~16.04.1
   linux-image-4.15.0-1154-aws     4.15.0-1154.167~16.04.1
   linux-image-4.15.0-1163-azure   4.15.0-1163.178~16.04.1
   linux-image-4.15.0-209-generic  4.15.0-209.220~16.04.1
   linux-image-4.15.0-209-lowlatency  4.15.0-209.220~16.04.1
   linux-image-aws-hwe             4.15.0.1154.137
   linux-image-azure               4.15.0.1163.147
   linux-image-gcp                 4.15.0.1148.138
   linux-image-generic-hwe-16.04   4.15.0.209.194
   linux-image-gke                 4.15.0.1148.138
   linux-image-lowlatency-hwe-16.04  4.15.0.209.194
   linux-image-oem                 4.15.0.209.194
   linux-image-oracle              4.15.0.1117.98
   linux-image-virtual-hwe-16.04   4.15.0.209.194

Ubuntu 14.04 ESM:
   linux-image-4.15.0-1163-azure   4.15.0-1163.178~14.04.1
   linux-image-azure               4.15.0.1163.129

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

References:
   https://ubuntu.com/security/notices/USN-6029-1
   CVE-2022-3903, CVE-2023-1073, CVE-2023-1074, CVE-2023-1281,
   CVE-2023-26545

Package Information:
   https://launchpad.net/ubuntu/+source/linux/4.15.0-209.220
   https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1154.167
   https://launchpad.net/ubuntu/+source/linux-azure-4.15/4.15.0-1163.178
   https://launchpad.net/ubuntu/+source/linux-dell300x/4.15.0-1063.68
   https://launchpad.net/ubuntu/+source/linux-gcp-4.15/4.15.0-1148.164
   https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1138.143
   https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1117.128
   https://launchpad.net/ubuntu/+source/linux-raspi2/4.15.0-1130.138